EP 0996309 A3 20031105 - Ring network system and transmission apparatus
Title (en)
Ring network system and transmission apparatus
Title (de)
Ringnetzverfahren und Übertragungsvorrichtung
Title (fr)
Système de réseau en anneau et dispositif de communication
Publication
Application
Priority
JP 30110498 A 19981022
Abstract (en)
[origin: EP0996309A2] An MS-RDI receiving section (23) is arranged in each node. When an SF fault occurs in a service line (SL (4)) while the faults have occurred in a protection line (PL (1, 2)) of, e.g., a segment C, an SF fault occurrence notification is directly sent from a node C to a node D using an MS-RDI signal. An MS-RDI notifying section (22) transmits this MS-RDI signal via a remaining service line (SL (3)). An MS-RDI receiving section (23) of the node D receives the MS-RDI signal to detect occurrence of ring switching. <IMAGE>
IPC 1-7
IPC 8 full level
H04J 3/08 (2006.01); H04Q 3/00 (2006.01); H04Q 11/04 (2006.01)
CPC (source: EP)
H04J 3/085 (2013.01); H04Q 3/0075 (2013.01); H04Q 11/0478 (2013.01); H04J 2203/006 (2013.01)
Citation (search report)
- [Y] US 5442623 A 19950815 - WU TSONG-HO [US]
- [A] WO 9737452 A1 19971009 - DSC COMMUNICATIONS [US]
- [Y] "TYPES AND CHARACTERISTICS OF SDH NETWORK PROTECTION ARCHITECTURES", ITU-T TELECOMMUNICATION STANDARIZATION SECTOR OF ITU, GENEVA, CH, 10 July 1995 (1995-07-10), pages A - B,I-III,1-, XP000672074
- [A] DRAKE J: "A review of the four major SONET/SDH rings", PROCEEDINGS OF THE INTERNATIONAL CONFERENCE ON COMMUNICATIONS (ICC). GENEVA, MAY 23 - 26, 1993, NEW YORK, IEEE, US, vol. 3, 23 May 1993 (1993-05-23), pages 878 - 884, XP010136990, ISBN: 0-7803-0950-2
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
EP 0996309 A2 20000426; EP 0996309 A3 20031105; JP 2000134244 A 20000512; JP 3505406 B2 20040308
DOCDB simple family (application)
EP 99308338 A 19991021; JP 30110498 A 19981022